Ratchet wrench



Jan. 23, 1934. DAUGHERTY 1,944,171

RATCHET WRENCH Filed March 14, 1935 I 7 a I I 2 I l H 1 W H W 4 Z I /a4? E 66 2.5' .wid k9 l6 I1 I fflr Patented Jan. 23 1934 STATES PATENT@FFICE RATCHET WRENCH Arthur Daugherty, Kincaid, Saskatchewan, CanadaThe invention relates to a wrench and more especially to ratchetwrenches.

The primary object of the invention is the provision of a wrench of thischaracter, wherein the jaw thereof is adaptable for movement in oppositedirections, so that the wrench is reversible and susceptible for amaximum of leverage with a minimum of strain upon the head and handle,the jaw being reversed and moved under the 1 ratchet action of dogs ordetents, these being of novel form.

Another object of the invention is the provision of a wrench of thischaracter, wherein the same is susceptible of two-way ratchet action,whereby the wrench may be operated for the turning of a part either fromthe right or from the left, thereby rendering such wrench handy in theturning of parts in reverse directions.

A further object of the invention is the; prozo, vision of a wrench ofthis character which'is extremely simple in construction, readily andeasily adjusted for reverse ratchet action, thoroughly reliable andefficient in its operation, strong, durable yet light in weight, andinexpensive to manufacture.

With these and other objects in view, the invention consists in thefeatures of construction, combination and arrangement of parts as willbe hereinafter more fully described in detail, il-

lustrated in the accompanying drawing, which discloses the preferredembodiment of the invention, and pointed out in the claims hereuntoappended.

In the accompanying drawing:

Figure 1 is a fragmentary plan view partly broken away of a wrenchconstructed in accordance with the invention.

Figure 2 is a sectional view on the line 22 of Figure 1 looking in thedirection of the arrows.

Figure 3 is a sectional view on the line 3-3 of Figure 2 looking in thedirection of the arrows showing the handle shifted for ratchet action inone direction.

Figure 4 is a view similar to Figure 3 with the handle further adjusted.

Figure 5 is a view similar to Figure 4 showing the action of the wrenchfor ratchet movement in a reverse direction.

Figure 6 is a sectional view on the line 6-6 5 of Figure 1 looking inthe direction of the arrows.

Similar reference characters indicate corresponding parts throughout theseveral views in the drawing.

Referring to the drawing in detail, the wrench,

ss-which is of the ratchet type, constituting the present invention,comprises a barrel 10 of circular form and provided axially with asocket 11 of fiat-sided form so as to compel the head or nut of a boltor other article of corresponding shape placed in the same to turn withthe bar- 0 rel. The opposite ends of the barrel 10 are provided withcircular trunnions 12, these being reduced or of smaller diameter thanthe central portion of the barrel, thereby providing outwardly facingshoulders 13 at the base of said trunnions. On the periphery and betweenthe trunnions of the barrel 10 is an annular row of ratchet teeth 14,each of which preferably has the sloping or angular faces 15.

The barrel is preferably mounted in a head which includes a pair ofspaced parallel cheek plates 16, these having openings accommodating thetrunnions 12 and being spaced the required distancefor the receptiontherebetween of the ratchet end 17 of an actuating handle or lever 18.The ratchet end 17 is formed with a center bifurcation 19 locating onopposite sides thereof the ratchet dogs or detents 20, these beingshaped to fit snugly against the ratchet teeth 14 when engagedtherewith. Located in the bifurcation 19 is a connecting pin 21 for thecheek plates 16 and this pin is made fast in said plates.

The ratchet end 17 has formed therein spaced elongated openings 22 inwhich are received the pins or fulcrum members 23, these beingstationarily secured in the plates 16. It will be apparent that when thewrench is operated in either direction the strain on the said pins 23 isfrom opposite directions, thus limiting the movement of the handle 18 inso far as the movement required to rotate the barrel 10 is concerned. InFigure 3 of the drawing the wrench has been operated so that a ratchetaction of the same will be had in one direction, while in Figure 5 thewrench is adjusted for ratchet action thereof in a reverse direction.

Fitted in a countersink in one side face of the ratchet end 1'7 is alatch 24, the same being pivoted for rocking movement upon a pivot axle25 carried by said ratchet end 1'7. The latch plate 2 1 is formed with acenter notch 26 in which is received a cam 2'? having a rotary arbor 28journaled in the handle or lever 18 so that on the turning of the cam2'7 the plate 24 will be rocked in a right hand or left hand directionand thus the portions 29 will be brought into a position for the contactof the fulcrum pins or members 23 with said plate and thus assuring aright hand or left hand ratchet action of the ratchet end 17 of thelever or handle 18 in the 0 working of the wrench. The latch 24 haslittle or no lost motion when moved in either direction and fits snuglyagainst the fulcrum members or pins 23 excepting when the handle orlever 18 is in direct line with the head of the wrench as is clearlyshown in Figure a of the drawing.

The cam arbor 28 carries a finger grip 30 for the manual turning thereofto reverse the position of the cam 2'7.

t will be apparent that the wrench is susceptible of both right and lefthand ratchet actions, or, in other words, the manipulation of the barrel10 can be effected in reverse directions.

What is claimed is:

1. A wrench of the character described comprising a barrel of circularform having a center socket of flat sided form, circular trunnions onopposite sides of the barrel and concentrically of the center socket, ahead including a pair of cheek plates having openings accommodating thetrunnions of the barrel, a lever located between the cheek plates andhaving double reverse ratchet action upon the barrel, said lever beingfurcated, a pin securing the cheek plates and received in the furcation,said lever having elongated openings, fulcrum members carried betweenthe cheek plates and received in said elongated openings, a latchpivoted for rocking movement upon the lever and having a center notch,and a rotatable cam operative in the center notch in said latch to rockthe latter either in a right hand or left hand direction to locate thelatch relative to the fulcrum members for assuring a right hand or lefthand ratchet action of the lever.

2. A wrench of the character described comprising a barrel of circularform having a center socket of flat sided form, circular trunnions onopposite sides of the barrel and concentrically of the center socket, ahead including a pair of check plates having openings accommodating thetrunnions of the barrel, a lever located between the cheek plates andhaving double reverse ratchet action upon the barrel, said lever beingfurcated, a pin securing the cheek plates and received in the furcation,said lever having elongated openings, fulcrum members carried betweenthe cheek plates and received in said elongated openings, a latchpivoted for rocking movement upon the lever and having a center notch, arotatable cam operative in the center notch in said latch to rock thelatter either in a right hand or left hand direction to locate the latchrelative to the fulcrum members for assuring a right hand or left handratchet action of the lever, and a finger grip associated with the camfor reversing the position thereof.

3. A wrench of the character described comprising a barrel of circularform having a center socket of flat sided form, circular trunnions onopposite sides of the barrel and concentrically of the center socket, ahead including a pair of check plates having openings accommodating thetrunnions of the barrel, a lever located between the cheek plates andhaving double reverse ratchet action upon the barrel, said lever beingfurcated, a pin securing the cheek plates and received in the furcation,said lever having elongated openings, fulcrum members carried betweenthe cheek plates and received in said elongated openings, a latchpivoted for rocking movement upon the lever and having a center notch, arotatable cam operative in the center notch in said latch to rock thelatter either in a right hand or left hand direction to locate the latchrelative to the fulcrum members for assuring a right hand or left handratchet action of the lever, a finger grip associated with the cam forreversing the position thereof, and ratchet teeth formed peripherally ofthe barrel for double ratchet action of the lever.

ARTHUR DAUGHERTY.

Ito

